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Finding the Fourth Proportional to 347,717.21, 479,817.47 and 196,814.21

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Solution

The fourth proportional to 347,717.21, 479,817.47 and 196,814.21 is: 271,585.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,717.21 : 479,817.47 = 196,814.21 : x
  2. Step 2: Convert to fraction form
    347,717.21/479,817.47 = 196,814.21/x
  3. Step 3: Cross multiply
    347,717.21x = 479,817.47 × 196,814.21
  4. Step 4: Simplify right side
    347,717.21x = 94,434,894,395.20
  5. Step 5: Solve for x
    x = 94,434,894,395.20/347,717.21
  6. Step 6: Final answer
    x = 271,585.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.